Solar Water Heater

Definition: A system that uses solar energy to heat water for domestic use, typically consisting of solar collectors and a storage tank.

Relevance to energy: Solar water heaters can significantly reduce the energy needed for water heating, which accounts for a substantial portion of home energy use.

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Benefits:

• Reduces energy costs for water heating
• Environmentally friendly
• Low operating costs once installed

Drawbacks:

• High initial installation cost
• May require a backup system for cloudy days
• Performance varies with climate and available sunlight

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Statistics: The U.S. Department of Energy estimates that a solar water heater can reduce water heating bills by 50-80% annually.